DocomintDéverrouiller un PDF protégé par mot de passe
Supprimez un mot de passe d'un PDF dont vous connaissez déjà le mot de passe, entièrement dans votre navigateur.
Drop your PDF here
or choose a file from your device
What is a Déverrouiller un PDF protégé par mot de passe?
This removes a password from a PDF you're already able to open — typically a document you protected yourself and no longer need locked, or a file whose sender gave you the password directly and you'd rather not re-enter it every time.
How to use the Déverrouiller un PDF protégé par mot de passe
- Add a password-protected PDF you know the password to
- Enter that password
- Download the unlocked PDF
Example
Given a PDF that opens after typing "Q7#mx2Lp", entering that same password here removes the requirement entirely, so the next person who opens the file doesn't need it.
Why use Déverrouiller un PDF protégé par mot de passe
Covers the common encryption schemes
Handles RC4 40/128-bit and AES-128 — what the large majority of password-protected PDFs actually use.
Nothing uploaded
Decryption happens locally in this browser; your file and the password you type never leave your device.
Not a cracking tool
Only authenticates a password you already supply — it doesn't attempt to guess or brute-force an unknown one.
What can you create?
Stop re-entering a password you no longer need
Remove protection from a PDF you set a password on yourself but don't need locked anymore.
Prepare a file for merging or editing
Unlock a protected PDF first, since most other tools here can't open an encrypted file directly.
Simplify a file before sharing internally
Drop a password requirement on a document once it's moved from an external channel to internal, already-trusted storage.
Frequently asked questions
Is my PDF uploaded anywhere?
No — Déverrouiller un PDF protégé par mot de passe runs entirely in your browser using JavaScript/WebAssembly. Your PDF is never sent to a server.
Is there a file size limit?
Free use covers files up to 100MB per file; signing up for Pro raises that to 500MB.
Can this tool crack a password I don't know?
No. This only removes a password you already know — it isn't a password-cracking tool and won't attempt to guess or brute-force anything.
Does this work on any password-protected PDF, or only certain encryption types?
It handles the common types — RC4 40/128-bit and AES-128 — which cover most password-protected PDFs. Newer AES-256 (revision 5/6) files are explicitly rejected with a clear error rather than silently mishandled.